[PATCH 60/89] i2c: rk3x: Convert to platform remove callback returning void

[PATCH 60/89] i2c: rk3x: Convert to platform remove callback returning void

[Uwe Kleine-König]

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/i2c/busses/i2c-rk3x.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index b31cf4f18f85..a044ca0c35a1 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -1372,7 +1372,7 @@ static int rk3x_i2c_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int rk3x_i2c_remove(struct platform_device *pdev)
+static void rk3x_i2c_remove(struct platform_device *pdev)
 {
 	struct rk3x_i2c *i2c = platform_get_drvdata(pdev);
 
@@ -1381,15 +1381,13 @@ static int rk3x_i2c_remove(struct platform_device *pdev)
 	clk_notifier_unregister(i2c->clk, &i2c->clk_rate_nb);
 	clk_unprepare(i2c->pclk);
 	clk_unprepare(i2c->clk);
-
-	return 0;
 }
 
 static SIMPLE_DEV_PM_OPS(rk3x_i2c_pm_ops, NULL, rk3x_i2c_resume);
 
 static struct platform_driver rk3x_i2c_driver = {
 	.probe   = rk3x_i2c_probe,
-	.remove  = rk3x_i2c_remove,
+	.remove_new = rk3x_i2c_remove,
 	.driver  = {
 		.name  = "rk3x-i2c",
 		.of_match_table = rk3x_i2c_match,
-- 
2.39.2


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Re: [PATCH 60/89] i2c: rk3x: Convert to platform remove callback returning void

[Heiko Stuebner]

Am Montag, 8. Mai 2023, 22:52:37 CEST schrieb Uwe Kleine-König:
> The .remove() callback for a platform driver returns an int which makes
> many driver authors wrongly assume it's possible to do error handling by
> returning an error code. However the value returned is (mostly) ignored
> and this typically results in resource leaks. To improve here there is a
> quest to make the remove callback return void. In the first step of this
> quest all drivers are converted to .remove_new() which already returns
> void.
> 
> Trivially convert this driver from always returning zero in the remove
> callback to the void returning variant.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

Acked-by: Heiko Stuebner <heiko@sntech.de>



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